65697152 has 32 divisors (see below), whose sum is σ = 132742800. Its totient is φ = 32381440.

The previous prime is 65697133. The next prime is 65697161. The reversal of 65697152 is 25179656.

65697152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×65697152² = 8632231561822208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5474 + ... + 12702.

Almost surely, 2^65697152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65697152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66371400).

65697152 is an abundant number, since it is smaller than the sum of its proper divisors (67045648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65697152 is an equidigital number, since it uses as much as digits as its factorization.

65697152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7314 (or 7302 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 65697152 is about 8105.3779677446. The cubic root of 65697152 is about 403.5049322569.

The spelling of 65697152 in words is "sixty-five million, six hundred ninety-seven thousand, one hundred fifty-two".